How much mobile data do I need, and what does it cost?

Today's cheapest plan with at least 20 GB is Pivotel 25GB at $22.90 a month ongoing ($11.45 a month for the first 6 months), and with at least 50 GB it is SpinTel 50GB at $29 a month, read 8 November 2026; the step from one allowance to the next is the figure to decide on.

OpenStream

Updated today · 8 November 2026, 11:00 am AEDT · published 31 October 2026

OpenStream lists every plan it reads and ranks on price alone. Some providers pay OpenStream a referral fee when a visitor it sends activates a service; no one pays for placement and nothing is promoted. How OpenStream works.

What the allowance means

Every row on this site carries the included data as the brand's page states it, in gigabytes per month or per recharge period. A plan sold per 28 days is scaled to 30 days for both its price and its data so the rows compare on one basis; the price as sold is shown beside it. Where the page states no allowance the row says "data not stated" and is not ranked for data.

Cheapest plan at each allowance, per 30 days

At least 10 GB: Pivotel 25GB $22.90 a month ongoing ($11.45 a month for the first 6 months), 25GB, cheapest of 85; At least 20 GB: Pivotel 25GB $22.90 a month ongoing ($11.45 a month for the first 6 months), 25GB, cheapest of 79; At least 50 GB: SpinTel 50GB $29 a month, 50GB, cheapest of 53; At least 100 GB: Yomojo 105GB $34.90 per 30-day recharge ($34.90 per 30 days), 105GB, cheapest of 31. Read 8 November 2026.

At least 10 GB: Pivotel 25GB$22.90 a month ongoing ($11.45 a month for the first 6 months), 25GB
At least 20 GB: Pivotel 25GB$22.90 a month ongoing ($11.45 a month for the first 6 months), 25GB
At least 50 GB: SpinTel 50GB$29 a month, 50GB
At least 100 GB: Yomojo 105GB$34.90 per 30-day recharge ($34.90 per 30 days), 105GB

Go to Pivotel Every SIM-only plan, cheapest first

Deciding between two allowances

The cheapest plan at each allowance is read from the brands' pages every hour, so the gaps above are today's: from 10 to 20 GB costs $0 more per 30 days, from 20 to 50 GB costs $6.10 more per 30 days, from 50 to 100 GB costs $5.90 more per 30 days. Your own usage is on your current bill or in the phone's data settings; the check below starts from it.

Per month or per recharge

27 of the priced plans are sold per recharge rather than per month; for those the figure per 30 days is the comparable one and the row states both. The guide on prepaid against SIM-only has the figures.

Questions this guide answers

What is the cheapest mobile plan with at least 20 GB?

Pivotel 25GB at $22.90 a month ongoing ($11.45 a month for the first 6 months), 25GB, the cheapest of 79 plans with at least that much data, read 8 November 2026.

What is the cheapest mobile plan with 50 GB?

SpinTel 50GB at $29 a month, 50GB, read 8 November 2026.

How does OpenStream compare a 28-day plan with a monthly one?

Both the price and the data are scaled to 30 days; the price as sold per recharge is shown beside the figure.

Mobile check · step 1 of 2

How much data do you use a month?

Up to 10 GB About 20 GB About 50 GB 100 GB or more Not sure

Tap one to begin. One more question, what you pay, then every SIM-only plan with at least that data, cheapest first. Open the check

Sources

Every plan or policy figure: the provider's own page or the regulator's release as read on the date shown, linked from each row; how each market is read.

Open pricing means Australians can be better informed, and save more.

Most comparison sites show a fraction of the market: the providers that pay to be listed. OpenStream tracks every NBN brand on NBN Co's register, 149 NBN brands on the register, with 431 priced NBN plans re-read every hour. Nothing is promoted, every price links to the page it came from, and the whole dataset is free to download.